SUBJECT:ELECTROMAGNETIC FIELD THEORY QUESTION NO 1(A):Let the electric potential at a point in space is zero, does itmeans that the electric filed intensity is zero at that point? And what happensto electric potential if the electric field intensity is zero at a point in space?Explain both cases.(B):What do you mean by electric flux density? And how you will define (inwords) the Gauss's law in term of electric flux de nsity? Under what conditionsis Gauss's law useful in calculating the electric field intensity of a chargedistribution?Subject:electromagnetic field theory

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Answered: QUESTION NO 1(A):Let the electric…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter7: Electric Potential

Section: Chapter Questions

Problem 72P: The practical limit to all electric field in air is about 3.00106 N/C. Above this strength, sparking...

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Gauss’s law also helps us locate charge on conductors. There are several distinct pieces we need forthis, listed below. Explain briefly why is each of them true.(a) The electric field inside a conductor (in the conducting material) is zero if the conductor is instatic equilibrium (charges are not moving or at least not accelerating.)(b) The total charge on an isolated conductor (or, really, any object) is constant.(c) The net charge on the wall of a cavity in a conductor is equal to the opposite of the total chargethat is floating inside the cavity.(d) Any excess charge on a conductor is all at the surfaces - including both the outer surface of theconductor and any inner surfaces of cavities - but never in the material.(e) The charge on the outer surface of a conductor is equal to the total charge on the conductorand inside any cavities in it.
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A conductor that carries a net charge Q has a hollow, empty cavity in its interior. Does the polential vary from point to point within the material of the conductor? What about within the caivity? How does the potential inside the cavity compare to the potential within the material of the conductor? For the toolbar, press ALT+F10 (PC) or AL FN+F10 (Mac). BIUS Paragraph vAV I S.. Arial 14px OWORDS POWERED BY TINY
Explain with the help of a diagram (if needed) the relationship between the electronic polarizability of molecules and the ability of a high value dielectric material (εr = 10) to either increase or decrease the charge storing capacity of a parallel-plate capacitor if such a material is inserted within the gap between the two plates. For your answer assume that the typically used dielectric material between the two plates of a capacitor is air (εr = 1).
Please explain Keatly 'aind cleardy with Equationo oShowrng the corest process Yand answees I have tilud tuwo way La(6). and only gethe same answeifor 10 Quest ioi (6). Thauk yau!/ An electron with a speed of 3.70 × 108 cm/s in the positive direction of an x axis enters an electric field of magnitude 2.74 x 103 N/C, traveling along a field line in the direction that retards its motion. (a) How far will the electron travel in the field before stopping momentarily, and (b) how much time will have elapsed? (c) If the region containing the electric field is 4.17 mm long (too short for the electron to stop within it), what fraction of the electron's initial kinetic energy will be lost in that region? (a) Number i 0:0142239849 Units meteRs (b) Number i 7.69X 10 - 9 seconds Units (c) Number i -1 i Units
Explain this statement: “In a static situation, the electric field at the surface of a conductor can have no component parallel to the surface because this would violate the condition that the charges on the surface are at rest.” Would this statement be valid for the electric field at the surface of an insulator? Explain your answer and the reason for any differences between the cases of a conducto and an insulator.

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